MCQ
Which among the following elements has the tendency to form covalent compounds
- A$Ba$
- ✓$Be$
- C$Mg$
- D$Ca$
✓
Answer
Correct option: B.
$Be$
(b) Due to its small size and $2$ electrons in $s-$orbital $Be$ forms covalent compound.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Why is the alkyl halide below not capable of undergoing an $E_2$ reaction upon treatment with sodium ethoxide
→$9.0\, gm$ of ${H_2}O$ is vaporised at ${100\,^o}C$ and $1 \,atm$ pressure. If the latent heat of vaporisation of water is $x\,J/gm$, then $\Delta S$ is given by
→The number of orbitals in $2p$ sub-shell is
→When $Cu$ or $Zn$ added to $CuSO_4$ we get $Cu$ .It is due to
→The charge of an electron is $ - 1.6 \times {10^{ - 19}}C.$ The value of free charge on $L{i^ + }$ ion will be
→Compounds after ozonolysis followed by hydrolysis are :
The correct order of electron affinity is
Given that the bond energy of hydrogen-hydrogen bond is $436\, kJ/mol$, that of hydrogen-oxygen bond is $464\, kJ/mol$, and those in oxygen molecules $496\, kJ/mol$, what is the approximate heat of reaction for $2H_2 + O_2 \longrightarrow 2H_2O$ ? .....$kJ/mol$
→Correct Lewis acidity order of $BX_3$ is
→From the ground state electronic configuration of the elements given below, pick up the one with highest value of second ionisation energy.